My guess is because they are such famous books. They really hit it off and were so popular they turned it into books. You don't have to take my word for it. It's just a guess. Sorry if this wasn't the answer you wanted.
reading books
JK Rowling's books were published by Bloomsbury in the UK, Scholastic in the US and Raincoast in Canada.
yes she did a little bit
This may be wrong but I am quite sure they both died before the books were published
no she was a singer
Jane Austen, I think
27th July 1993 ;-) she is jk rowlings oldest child
She has blue eyes
yes there is
Joann Kathleen Rowling
Albus Dumbledore
J.K. Rowling has not publicly disclosed her favorite place on Earth.